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API Integration JavaScript Node.js React.js Typescript
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Natan R.

@natanr28

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5.0
3

3.5

3.5

100%

⭐️Engineer of Smart Systems | MERN, Python, .NET⭐️

$25 USD / Hour

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Brazil (9:12 AM)

Joined on January 29, 2026

$25 USD / Hour

I build production-grade software and automations that reduce manual work, improve decision-making, and scale smoothly. From customer-facing web apps to internal dashboards and AI-assisted workflows,, I focus on clean architecture, measurable outcomes, and reliable delivery. What I deliver: - Modern web apps & internal tools your team actually enjoys using - Secure, maintainable NodeJs backends with clean APIs and solid data models - Automation that eliminates busywork (routing, follow-ups, reporting, approvals) - AI-powered expereinces (support assistants, smart intake, content + decision flows) - Documentation + handover so your team can confidently own the system Core Stack: - Frontend: React.js, Next.js, Typescript (plus Vue ; Anular when needed) - Backend: NodeJS (Express / NestJS), C# / .NET core (ASP.NET) - Data: PostgreSQL, SQL Server, MongoDB (Prismar / Entity Framework) - Python: data processing, integrations, orchestration scripts - Automation: n8n, [login to view URL], Zapier, GoHighLevel - AI: OpenAI API (chat, classification, routing, structured workflows) - Integrations: Slack, Twilio, Notion, Airtable, Google sheets, Discord, Telegram, Landbot Typical wins for clients - Faster support and lead response with 24/7 AI assistance + smart routing - Better visibility with role-based dashboards for ops, billing, and analytics - Fewer errors and smoother ops with event-driven automations across tools - Cleaner scaling with tests, logging/monitoring hooks, and deploy-ready structure How I work - Discover & blueprint: map flows, define metrics, confirm scope - Build in iterations: short milestones, demos, and quick feedback loops - Launch & support: docs, handover, monitoring, and stabilization

Verifications

On time

100%

On budget

100%

Accept rate

80%

Portfolio

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5.0 · 3 Reviews
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Discord Bot Development – Automated Engagement & Reward System $350 USD

This freelancer is really fast. He' delivered the perfect result with really fast pace. Thanks.

Vitalii A.

@jonhw5

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Prague, Czech Republic

1 month ago

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Weather App using Vue.js and Flask $150 USD

Natan delivered exactly what I needed, right on schedule. I’m genuinely impressed with his expertise and professionalism. I’d absolutely recommend him to anyone looking for a talented, reliable developer.

Stanislav Y.

@stanislavy9

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Odesa, Ukraine

1 month ago

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Small E-commerce Web App (React, Node.js, Stripe Integration) $60 USD

Good freelancer. He delivered exactly what was requested on time. Thank you!

Jason B.

@jasonb441

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New York, United States

2 months ago

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